47re won't lock up via lockup switch.

[Bustedknuckles]

It just quit working one day. Replaced switch and wiring and grounded it right to the battery. It still locks up normally while driving which is why I am posting here. Any ideas trans guys?

 

[stubz616]

Unplug the connector at the Trans and flip the switch and check ohms to ground at the transmission. There's something wrong with the wiring somewhere


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[jasonc]

Check that the center wire in the plug has constant 5volts.